Support for portable optical instruments



.Oct. 1, 1935. A. PULZ SUPPORT FOR PORTABLE OPTICAL INSTRUMENTS Filed NOV. 25, 1953 1n van/0r Patented on, 1, 1935 UNITED STATES scrron'r FOB PORTABLE OPTICAL INSTRUMENTS Artur Pull, Jena, Germany, assignor to iirm Carl Zelss, Jena, Germany Application November 25, 1933, Serial No. 699,682 In Germany November 26, 1932 3 Claims.

I have filed applications in Germany, November 26, 1932, and Italy, April 4, 1933.

' The invention relates to supports for portable optical instruments, especially rangeflnders, 6 other transverse observation or measuring instruments and photographic cameras, whichso rest on the body oi the person using and observing by means of the instrument that this person's hands are free and may operate the instrument 10 and that the load of the instrument may be sustained for longer spaces of time without any exertion or fatigue worth mentioning. It is desirable that the body of the person carrying the support with the optical instrument may assume l5 anatural attitude and that the instrument may be used in and given diiierent positions without any great eflorts having to be made.

The invention aims atattaining the said advantage by providing the support with two curved pieces to be placed on the shoulders of the person using the instrument, to each oi which one arm for holding the optical instrument'is so struction oi the support, the forces o'i rotation are caused by draw springs whose one ends; are 35 attached to the exterior parts of the said arms and whose other ends are attached to rods 1'18? idly connected to the said shoulder ple'cesr To avoid any possibility oi displacing the supp r on the observer's body when oneposition for use oi the optical instrument is changed for another and to prevent the support from gliding,

away from the observers shoulders, it is advisable io so construct the shoulder pieces that they extend over the entire length oi and may be attached to the observer's back.- This attachment 'is eflected by means oi a belt or the like.

' IntheacdompanyingdrawingJ'igureIrepreseats a constructional example of the invention in part-sectional elevation, and Figure 2 illus-' trates a front view of the example.

The constructional example is a .support forportable rangeilnders. This support has two shoulder pieces owhichare made to conform to the observers back and which are connected to a" each otherat their lower 'ends., The shoulder parts of the pieces a are strengthenedby plates Into the plates b are screwed bolts c to which t areattache'd bymeans oi screws e.

The sleeves'd are provided with ioin'tsvf about hich arms gtmay rotate. The arms a are m having such a strength as to compensate ap- 5 proximately for the weight of that part oi the support which extends forwardly and for the weight of the rangeflnder placed on the said part. To the lower ends of the shoulder pieces a is fixed a belt 1': for attaching the support to the observer's back.

, When the instrument is in use, the support is so placed on the observer's shoulders that the interconnected ends of the shoulder pieces a lie against and are secured by a belt n to the observer's back. The rangeilnder k is placed in the bearings i, in which it may be rotated at will about its longitudinal axis. By rotating the arms a about the joints 1, the rangeflnder k may be adjusted according to the height oi the object to 2 be measured. It may be given, for instance,- the position It, the observer having-to incline his head rearwardly. The springs 11: hold the rangeflnder kin any desired position for use, and

the obscrver may easily operate the adjusting and measuring organs of the rangeflnden The, belt n prevents the support from gliding down .irom the observer's shoulders when the range finder assumes positions in which the centre oi Y gravity of the sup rt and the optical instrument lies in iront oi the obeerversshoulders.

I claim: v

l. A support for portable optical instruments, comprising two curved pieces adapted to be placed on the shoulders of an observer, two arms extending'iorwardly, two means ior supporting these arms ior'rotation about anaxis approximately intersecting the observer's neck Joint, each oi these two means being provided on one of the said shoulder pieces, two devices for supporting the two ends of an optical instrument, each of these two devices being connected to one of the said arms, and other means iorcounteracting the weight of the optical instrument. I

2. In a support ior portable optical instruments, according to claim 1, the said means ior supporting,the said arms consisting oi two rods extending upwardly, each oi these two rods being rigidly connectedeio oneoi the said shoulder pieces, each of the said arms being pivotally secured to one of the said rods, the said means ior counteracting the weight of the optical instru' ment consistingof two draw springs, each oi these draw springs connecting the upper end oi oneoi the tworods to the outer end oi the adiacentarm. f

s. In a support for portable optical instruments, 1 rdingtoclaimhabeltiortheobserventhisfl beltbeingiixedtothetwoshoulderpieces. 

